it's starting to do something

Author: sparkoo

cmd/wasm/wasm.go

@@ -6,11 +6,13 @@ import (
 	"csgo-2d-demo-player/pkg/message"
 	"csgo-2d-demo-player/pkg/parser"
 	"fmt"
+	"io"
 	"log"
 	"syscall/js"
 	"time"
 
 	"github.com/markus-wa/demoinfocs-golang/v5/pkg/demoinfocs"
+	"google.golang.org/protobuf/proto"
 )
 
 func main() {
@@ -21,27 +23,42 @@ func main() {
 }
 
 func testt(this js.Value, args []js.Value) interface{} {
-	fmt.Printf("testt: +%v\n", args[0].Get("size"))
-	input := make([]byte, args[0].Get("size"))
+	fmt.Printf("testt: +%v\n", args[0].Get("length"))
+	input := make([]byte, args[0].Get("length").Int())
 	js.CopyBytesToGo(input, args[0])
 
 	fmt.Println("fer")
 
-	gzipReader, streamErr := gzip.NewReader(bytes.NewReader(input))
+	parse(bytes.NewReader(input), args[1])
+
+	return js.ValueOf("2")
+}
+
+func parse(input io.Reader, callback js.Value) {
+	fmt.Printf("callback? %+v\n", callback)
+
+	gzipReader, streamErr := gzip.NewReader(input)
 	if streamErr != nil {
 		log.Printf("Failed to create gzip reader from demo. %+v", streamErr)
 	}
 
 	startTime := time.Now().Local()
 	err := parser.Parse(gzipReader, func(msg *message.Message, state demoinfocs.GameState) {
 		fmt.Printf("message: %+v \n", msg.MsgType)
+
+		payload, protoErr := proto.Marshal(msg)
+		if protoErr != nil {
+			fmt.Printf("failed to marshall the message: %+v %+v\n", msg, protoErr)
+		}
+		arrayConstructor := js.Global().Get("Uint8Array")
+		dataJS := arrayConstructor.New(len(payload))
+		js.CopyBytesToJS(dataJS, payload)
+		callback.Invoke(dataJS)
 	})
 	fmt.Printf("parsing took: %s\n", time.Since(startTime))
 
 	if err != nil {
 		fmt.Printf("Failed to parse a demo: %+v \n", err)
 	}
 	fmt.Println("demo parsed?")
-
-	return js.ValueOf("2")
 }

web/player/src/App.js

@@ -11,6 +11,7 @@ function App() {
   const [messageBus] = useState(new MessageBus())
   const [player] = useState(new Player(messageBus))
   const [serverHost] = useState(window.location.host.includes("localhost") ? "http://localhost:8080" : "");
+  const proto = require("./protos/Message_pb");
 
   useEffect(() => {
     console.log("run run run")
@@ -25,13 +26,28 @@ function App() {
         .then((result) => {
           go.run(result.instance);
 
-          
+          // window.withDownload("https://corsproxy.io/?" + encodeURIComponent("https://github.com/sparkoo/csgo-2d-demo-viewer/raw/refs/heads/master/test_demos/1-c26b4e22-66ac-4904-87cc-3b2b65a67ddb-1-1.dem.gz"))
           fetch("https://corsproxy.io/?" + encodeURIComponent("https://github.com/sparkoo/csgo-2d-demo-viewer/raw/refs/heads/master/test_demos/1-c26b4e22-66ac-4904-87cc-3b2b65a67ddb-1-1.dem.gz"))
           .then((result) => {
             console.log(result)
-            result.blob().then(b => {
-              console.log(b)
-              window.testt(b)
+            result.arrayBuffer().then(b => {
+              const data = new Uint8Array(b)
+              console.log(data)
+              window.testt(data, function (data) {
+                if(data instanceof Uint8Array) {
+                  const msg = proto.Message.deserializeBinary(data).toObject()
+                  messageBus.emit(msg)
+                } else {
+                  // text frame
+                  // console.log(event.data);
+                  console.log("[message] text data received from server, this is weird. We're using protobufs ?!?!?", data);
+                  messageBus.emit(JSON.parse(data))
+                }
+            
+                // console.log(`[message] Data received from server: ${event.data}`);
+                // let msg = JSON.parse(event.data)
+                // messageBus.emit(msg)
+              })
             })
           })
           .catch(err => console.log(err))